Thunderbird Feeds and Messages: Duplicates?

I use Thunderbird to track several RSS feeds but one thing that annoys me about reading Del.icio.us feeds is the problem of recurring links. It’s not surprising that the same links appear time and again but here’s a way to delete those duplicates: The Remove Duplicate Messages extension does just that. It will compare different elements of messages and offer to delete them.
It works best with RSS feeds when you select “Compare subject/Compare message body (slow)” in Tools->Extensions->Remove Duplicate Messages->Options.
If you use Feedster.com, you’ll notice all the dupes that come through when feedster is down. This’ll get rid of those too!

The Golden Compass
First of a three part fantasy/sci-fi series. Some people hate it because of it's anti God message but it's a great read. I found it hard to put down. There's even a Snopes article about the film adaptation.